source: josm/trunk/src/org/openstreetmap/josm/tools/I18n.java@ 16029

Last change on this file since 16029 was 16029, checked in by stoecker, 4 years ago

see #18856 - reactivate arabic language
  • Property svn:eol-style set to native
File size: 30.1 KB
Line 
1// License: GPL. For details, see LICENSE file.
2package org.openstreetmap.josm.tools;
3
4import java.io.BufferedInputStream;
5import java.io.File;
6import java.io.IOException;
7import java.io.InputStream;
8import java.lang.annotation.Retention;
9import java.lang.annotation.RetentionPolicy;
10import java.net.URL;
11import java.nio.charset.StandardCharsets;
12import java.nio.file.InvalidPathException;
13import java.text.MessageFormat;
14import java.util.ArrayList;
15import java.util.Arrays;
16import java.util.Collection;
17import java.util.Comparator;
18import java.util.HashMap;
19import java.util.Locale;
20import java.util.Map;
21import java.util.regex.Matcher;
22import java.util.regex.Pattern;
23import java.util.zip.ZipEntry;
24import java.util.zip.ZipFile;
25
26/**
27 * Internationalisation support.
28 *
29 * @author Immanuel.Scholz
30 */
31public final class I18n {
32
33 private static final String CORE_TRANS_DIRECTORY = "/data/";
34 private static final String PLUGIN_TRANS_DIRECTORY = "data/";
35
36 /**
37 * This annotates strings which do not permit a clean i18n. This is mostly due to strings
38 * containing two nouns which can occur in singular or plural form.
39 * <br>
40 * No behaviour is associated with this annotation.
41 */
42 @Retention(RetentionPolicy.SOURCE)
43 public @interface QuirkyPluralString {
44 }
45
46 private I18n() {
47 // Hide default constructor for utils classes
48 }
49
50 /**
51 * Enumeration of possible plural modes. It allows us to identify and implement logical conditions of
52 * plural forms defined on <a href="https://help.launchpad.net/Translations/PluralForms">Launchpad</a>.
53 * See <a href="http://www.unicode.org/cldr/charts/latest/supplemental/language_plural_rules.html">CLDR</a>
54 * for another complete list.
55 * @see #pluralEval
56 */
57 private enum PluralMode {
58 /** Plural = Not 1. This is the default for many languages, including English: 1 day, but 0 days or 2 days. */
59 MODE_NOTONE,
60 /** No plural. Mainly for Asian languages (Indonesian, Chinese, Japanese, ...) */
61 MODE_NONE,
62 /** Plural = Greater than 1. For some latin languages (French, Brazilian Portuguese) */
63 MODE_GREATERONE,
64 /* Special mode for
65 * <a href="http://www.unicode.org/cldr/charts/latest/supplemental/language_plural_rules.html#ar">Arabic</a>.*/
66 MODE_AR,
67 /** Special mode for
68 * <a href="http://www.unicode.org/cldr/charts/latest/supplemental/language_plural_rules.html#cs">Czech</a>. */
69 MODE_CS,
70 /** Special mode for
71 * <a href="http://www.unicode.org/cldr/charts/latest/supplemental/language_plural_rules.html#pl">Polish</a>. */
72 MODE_PL,
73 /* Special mode for
74 * <a href="http://www.unicode.org/cldr/charts/latest/supplemental/language_plural_rules.html#ro">Romanian</a>.*
75 MODE_RO,*/
76 /** Special mode for
77 * <a href="http://www.unicode.org/cldr/charts/latest/supplemental/language_plural_rules.html#lt">Lithuanian</a>. */
78 MODE_LT,
79 /** Special mode for
80 * <a href="http://www.unicode.org/cldr/charts/latest/supplemental/language_plural_rules.html#ru">Russian</a>. */
81 MODE_RU,
82 /** Special mode for
83 * <a href="http://www.unicode.org/cldr/charts/latest/supplemental/language_plural_rules.html#sk">Slovak</a>. */
84 MODE_SK,
85 /* Special mode for
86 * <a href="http://www.unicode.org/cldr/charts/latest/supplemental/language_plural_rules.html#sl">Slovenian</a>.*
87 MODE_SL,*/
88 }
89
90 private static volatile PluralMode pluralMode = PluralMode.MODE_NOTONE; /* english default */
91 private static volatile String loadedCode = "en";
92
93 /** Map (english/locale) of singular strings **/
94 private static volatile Map<String, String> strings;
95 /** Map (english/locale) of plural strings **/
96 private static volatile Map<String, String[]> pstrings;
97 private static Locale originalLocale = Locale.getDefault();
98 private static Map<String, PluralMode> languages = new HashMap<>();
99 // NOTE: check also WikiLanguage handling in LanguageInfo.java when adding new languages
100 static {
101 languages.put("ar", PluralMode.MODE_AR);
102 languages.put("ast", PluralMode.MODE_NOTONE);
103 languages.put("bg", PluralMode.MODE_NOTONE);
104 languages.put("be", PluralMode.MODE_RU);
105 languages.put("ca", PluralMode.MODE_NOTONE);
106 languages.put("ca@valencia", PluralMode.MODE_NOTONE);
107 languages.put("cs", PluralMode.MODE_CS);
108 languages.put("da", PluralMode.MODE_NOTONE);
109 languages.put("de", PluralMode.MODE_NOTONE);
110 languages.put("el", PluralMode.MODE_NOTONE);
111 languages.put("en_AU", PluralMode.MODE_NOTONE);
112 //languages.put("en_CA", PluralMode.MODE_NOTONE);
113 languages.put("en_GB", PluralMode.MODE_NOTONE);
114 languages.put("es", PluralMode.MODE_NOTONE);
115 languages.put("et", PluralMode.MODE_NOTONE);
116 //languages.put("eu", PluralMode.MODE_NOTONE);
117 languages.put("fi", PluralMode.MODE_NOTONE);
118 languages.put("fr", PluralMode.MODE_GREATERONE);
119 languages.put("gl", PluralMode.MODE_NOTONE);
120 //languages.put("he", PluralMode.MODE_NOTONE);
121 languages.put("hu", PluralMode.MODE_NOTONE);
122 languages.put("id", PluralMode.MODE_NONE);
123 //languages.put("is", PluralMode.MODE_NOTONE);
124 languages.put("it", PluralMode.MODE_NOTONE);
125 languages.put("ja", PluralMode.MODE_NONE);
126 languages.put("ko", PluralMode.MODE_NONE);
127 // fully supported only with Java 8 and later (needs CLDR)
128 languages.put("km", PluralMode.MODE_NONE);
129 languages.put("lt", PluralMode.MODE_LT);
130 languages.put("mr", PluralMode.MODE_NOTONE);
131 languages.put("nb", PluralMode.MODE_NOTONE);
132 languages.put("nl", PluralMode.MODE_NOTONE);
133 languages.put("pl", PluralMode.MODE_PL);
134 languages.put("pt", PluralMode.MODE_NOTONE);
135 languages.put("pt_BR", PluralMode.MODE_GREATERONE);
136 //languages.put("ro", PluralMode.MODE_RO);
137 languages.put("ru", PluralMode.MODE_RU);
138 languages.put("sk", PluralMode.MODE_SK);
139 //languages.put("sl", PluralMode.MODE_SL);
140 languages.put("sv", PluralMode.MODE_NOTONE);
141 //languages.put("tr", PluralMode.MODE_NONE);
142 languages.put("uk", PluralMode.MODE_RU);
143 languages.put("vi", PluralMode.MODE_NONE);
144 languages.put("zh_CN", PluralMode.MODE_NONE);
145 languages.put("zh_TW", PluralMode.MODE_NONE);
146 }
147
148 private static final String HIRAGANA = "hira";
149 private static final String KATAKANA = "kana";
150 private static final String LATIN = "latn";
151 private static final String PINYIN = "pinyin";
152 private static final String ROMAJI = "rm";
153
154 // Matches ISO-639 two and three letters language codes + scripts
155 private static final Pattern LANGUAGE_NAMES = Pattern.compile(
156 "name:(\\p{Lower}{2,3})(?:[-_](?i:(" + String.join("|", HIRAGANA, KATAKANA, LATIN, PINYIN, ROMAJI) + ")))?");
157
158 private static String format(String text, Object... objects) {
159 try {
160 return MessageFormat.format(text, objects);
161 } catch (InvalidPathException e) {
162 System.err.println("!!! Unable to format '" + text + "': " + e.getMessage());
163 e.printStackTrace();
164 return null;
165 }
166 }
167
168 /**
169 * Translates some text for the current locale.
170 * These strings are collected by a script that runs on the source code files.
171 * After translation, the localizations are distributed with the main program.
172 * <br>
173 * For example, <code>tr("JOSM''s default value is ''{0}''.", val)</code>.
174 * <br>
175 * Use {@link #trn} for distinguishing singular from plural text, i.e.,
176 * do not use {@code tr(size == 1 ? "singular" : "plural")} nor
177 * {@code size == 1 ? tr("singular") : tr("plural")}
178 *
179 * @param text the text to translate.
180 * Must be a string literal. (No constants or local vars.)
181 * Can be broken over multiple lines.
182 * An apostrophe ' must be quoted by another apostrophe.
183 * @param objects the parameters for the string.
184 * Mark occurrences in {@code text} with <code>{0}</code>, <code>{1}</code>, ...
185 * @return the translated string.
186 * @see #trn
187 * @see #trc
188 * @see #trnc
189 */
190 public static String tr(String text, Object... objects) {
191 if (text == null) return null;
192 return format(gettext(text, null), objects);
193 }
194
195 /**
196 * Translates some text in a context for the current locale.
197 * There can be different translations for the same text within different contexts.
198 *
199 * @param context string that helps translators to find an appropriate
200 * translation for {@code text}.
201 * @param text the text to translate.
202 * @return the translated string.
203 * @see #tr
204 * @see #trn
205 * @see #trnc
206 */
207 public static String trc(String context, String text) {
208 if (context == null)
209 return tr(text);
210 if (text == null)
211 return null;
212 return format(gettext(text, context), (Object) null);
213 }
214
215 public static String trcLazy(String context, String text) {
216 if (context == null)
217 return tr(text);
218 if (text == null)
219 return null;
220 return format(gettextLazy(text, context), (Object) null);
221 }
222
223 /**
224 * Marks a string for translation (such that a script can harvest
225 * the translatable strings from the source files).
226 *
227 * For example, <code>
228 * String[] options = new String[] {marktr("up"), marktr("down")};
229 * lbl.setText(tr(options[0]));</code>
230 * @param text the string to be marked for translation.
231 * @return {@code text} unmodified.
232 */
233 public static String marktr(String text) {
234 return text;
235 }
236
237 public static String marktrc(String context, String text) {
238 return text;
239 }
240
241 /**
242 * Translates some text for the current locale and distinguishes between
243 * {@code singularText} and {@code pluralText} depending on {@code n}.
244 * <br>
245 * For instance, {@code trn("There was an error!", "There were errors!", i)} or
246 * <code>trn("Found {0} error in {1}!", "Found {0} errors in {1}!", i, Integer.toString(i), url)</code>.
247 *
248 * @param singularText the singular text to translate.
249 * Must be a string literal. (No constants or local vars.)
250 * Can be broken over multiple lines.
251 * An apostrophe ' must be quoted by another apostrophe.
252 * @param pluralText the plural text to translate.
253 * Must be a string literal. (No constants or local vars.)
254 * Can be broken over multiple lines.
255 * An apostrophe ' must be quoted by another apostrophe.
256 * @param n a number to determine whether {@code singularText} or {@code pluralText} is used.
257 * @param objects the parameters for the string.
258 * Mark occurrences in {@code singularText} and {@code pluralText} with <code>{0}</code>, <code>{1}</code>, ...
259 * @return the translated string.
260 * @see #tr
261 * @see #trc
262 * @see #trnc
263 */
264 public static String trn(String singularText, String pluralText, long n, Object... objects) {
265 return format(gettextn(singularText, pluralText, null, n), objects);
266 }
267
268 /**
269 * Translates some text in a context for the current locale and distinguishes between
270 * {@code singularText} and {@code pluralText} depending on {@code n}.
271 * There can be different translations for the same text within different contexts.
272 *
273 * @param context string that helps translators to find an appropriate
274 * translation for {@code text}.
275 * @param singularText the singular text to translate.
276 * Must be a string literal. (No constants or local vars.)
277 * Can be broken over multiple lines.
278 * An apostrophe ' must be quoted by another apostrophe.
279 * @param pluralText the plural text to translate.
280 * Must be a string literal. (No constants or local vars.)
281 * Can be broken over multiple lines.
282 * An apostrophe ' must be quoted by another apostrophe.
283 * @param n a number to determine whether {@code singularText} or {@code pluralText} is used.
284 * @param objects the parameters for the string.
285 * Mark occurrences in {@code singularText} and {@code pluralText} with <code>{0}</code>, <code>{1}</code>, ...
286 * @return the translated string.
287 * @see #tr
288 * @see #trc
289 * @see #trn
290 */
291 public static String trnc(String context, String singularText, String pluralText, long n, Object... objects) {
292 return format(gettextn(singularText, pluralText, context, n), objects);
293 }
294
295 private static String gettext(String text, String ctx, boolean lazy) {
296 int i;
297 if (ctx == null && text.startsWith("_:") && (i = text.indexOf('\n')) >= 0) {
298 ctx = text.substring(2, i-1);
299 text = text.substring(i+1);
300 }
301 if (strings != null) {
302 String trans = strings.get(ctx == null ? text : "_:"+ctx+'\n'+text);
303 if (trans != null)
304 return trans;
305 }
306 if (pstrings != null) {
307 i = pluralEval(1);
308 String[] trans = pstrings.get(ctx == null ? text : "_:"+ctx+'\n'+text);
309 if (trans != null && trans.length > i)
310 return trans[i];
311 }
312 return lazy ? gettext(text, null) : text;
313 }
314
315 private static String gettext(String text, String ctx) {
316 return gettext(text, ctx, false);
317 }
318
319 /* try without context, when context try fails */
320 private static String gettextLazy(String text, String ctx) {
321 return gettext(text, ctx, true);
322 }
323
324 private static String gettextn(String text, String plural, String ctx, long num) {
325 int i;
326 if (ctx == null && text.startsWith("_:") && (i = text.indexOf('\n')) >= 0) {
327 ctx = text.substring(2, i-1);
328 text = text.substring(i+1);
329 }
330 if (pstrings != null) {
331 i = pluralEval(num);
332 String[] trans = pstrings.get(ctx == null ? text : "_:"+ctx+'\n'+text);
333 if (trans != null && trans.length > i)
334 return trans[i];
335 }
336
337 return num == 1 ? text : plural;
338 }
339
340 public static String escape(String msg) {
341 if (msg == null) return null;
342 return msg.replace("\'", "\'\'").replace("{", "\'{\'").replace("}", "\'}\'");
343 }
344
345 private static URL getTranslationFile(String lang) {
346 return I18n.class.getResource(CORE_TRANS_DIRECTORY + lang.replace('@', '-') + ".lang");
347 }
348
349 /**
350 * Get a list of all available JOSM Translations.
351 * @return an array of locale objects.
352 */
353 public static Locale[] getAvailableTranslations() {
354 Collection<Locale> v = new ArrayList<>(languages.size());
355 if (getTranslationFile("en") != null) {
356 for (String loc : languages.keySet()) {
357 if (getTranslationFile(loc) != null) {
358 v.add(LanguageInfo.getLocale(loc));
359 }
360 }
361 }
362 v.add(Locale.ENGLISH);
363 Locale[] l = new Locale[v.size()];
364 l = v.toArray(l);
365 Arrays.sort(l, Comparator.comparing(Locale::toString));
366 return l;
367 }
368
369 /**
370 * Determines if a language exists for the given code.
371 * @param code The language code
372 * @return {@code true} if a language exists, {@code false} otherwise
373 */
374 public static boolean hasCode(String code) {
375 return languages.containsKey(code);
376 }
377
378 static String setupJavaLocaleProviders() {
379 // Look up SPI providers first (for JosmDecimalFormatSymbolsProvider).
380 // Enable CLDR locale provider on Java 8 to get additional languages, such as Khmer.
381 // https://docs.oracle.com/javase/8/docs/technotes/guides/intl/enhancements.8.html#cldr
382 // FIXME: This must be updated after we switch to Java 9.
383 // See https://docs.oracle.com/javase/9/docs/api/java/util/spi/LocaleServiceProvider.html
384 try {
385 try {
386 // First check we're able to open a stream to our own SPI file
387 // Java will fail on Windows if the jar file is in a folder with a space character!
388 I18n.class.getResourceAsStream("/META-INF/services/java.text.spi.DecimalFormatSymbolsProvider").close();
389 // Don't call Utils.updateSystemProperty to avoid spurious log at startup
390 return System.setProperty("java.locale.providers", "SPI,JRE,CLDR");
391 } catch (RuntimeException | IOException e) {
392 // Don't call Logging class, it may not be fully initialized yet
393 System.err.println("Unable to set SPI locale provider: " + e.getMessage());
394 }
395 } catch (SecurityException e) {
396 // Don't call Logging class, it may not be fully initialized yet
397 System.err.println("Unable to set locale providers: " + e.getMessage());
398 }
399 return System.setProperty("java.locale.providers", "JRE,CLDR");
400 }
401
402 /**
403 * I18n initialization.
404 */
405 public static void init() {
406 setupJavaLocaleProviders();
407
408 /* try initial language settings, may be changed later again */
409 if (!load(LanguageInfo.getJOSMLocaleCode())) {
410 Locale.setDefault(new Locale("en", Locale.getDefault().getCountry()));
411 }
412 }
413
414 /**
415 * I18n initialization for plugins.
416 * @param source file path/name of the JAR or Zip file containing translation strings
417 * @since 4159
418 */
419 public static void addTexts(File source) {
420 if ("en".equals(loadedCode))
421 return;
422 final ZipEntry enfile = new ZipEntry(PLUGIN_TRANS_DIRECTORY + "en.lang");
423 final ZipEntry langfile = new ZipEntry(PLUGIN_TRANS_DIRECTORY + loadedCode + ".lang");
424 try (
425 ZipFile zipFile = new ZipFile(source, StandardCharsets.UTF_8);
426 InputStream orig = zipFile.getInputStream(enfile);
427 InputStream trans = zipFile.getInputStream(langfile)
428 ) {
429 if (orig != null && trans != null)
430 load(orig, trans, true);
431 } catch (IOException | InvalidPathException e) {
432 Logging.trace(e);
433 }
434 }
435
436 private static boolean load(String l) {
437 if ("en".equals(l) || "en_US".equals(l)) {
438 strings = null;
439 pstrings = null;
440 loadedCode = "en";
441 pluralMode = PluralMode.MODE_NOTONE;
442 return true;
443 }
444 URL en = getTranslationFile("en");
445 if (en == null)
446 return false;
447 URL tr = getTranslationFile(l);
448 if (tr == null || !languages.containsKey(l)) {
449 return false;
450 }
451 try (
452 InputStream enStream = Utils.openStream(en);
453 InputStream trStream = Utils.openStream(tr)
454 ) {
455 if (load(enStream, trStream, false)) {
456 pluralMode = languages.get(l);
457 loadedCode = l;
458 return true;
459 }
460 } catch (IOException e) {
461 // Ignore exception
462 Logging.trace(e);
463 }
464 return false;
465 }
466
467 private static boolean load(InputStream en, InputStream tr, boolean add) {
468 Map<String, String> s;
469 Map<String, String[]> p;
470 if (add) {
471 s = strings;
472 p = pstrings;
473 } else {
474 s = new HashMap<>();
475 p = new HashMap<>();
476 }
477 /* file format:
478 Files are always a group. English file and translated file must provide identical datasets.
479
480 for all single strings:
481 {
482 unsigned short (2 byte) stringlength
483 - length 0 indicates missing translation
484 - length 0xFFFE indicates translation equal to original, but otherwise is equal to length 0
485 string
486 }
487 unsigned short (2 byte) 0xFFFF (marks end of single strings)
488 for all multi strings:
489 {
490 unsigned char (1 byte) stringcount
491 - count 0 indicates missing translations
492 - count 0xFE indicates translations equal to original, but otherwise is equal to length 0
493 for stringcount
494 unsigned short (2 byte) stringlength
495 string
496 }
497 */
498 try {
499 InputStream ens = new BufferedInputStream(en);
500 InputStream trs = new BufferedInputStream(tr);
501 byte[] enlen = new byte[2];
502 byte[] trlen = new byte[2];
503 boolean multimode = false;
504 byte[] str = new byte[4096];
505 for (;;) {
506 if (multimode) {
507 int ennum = ens.read();
508 int trnum = trs.read();
509 if (trnum == 0xFE) /* marks identical string, handle equally to non-translated */
510 trnum = 0;
511 if ((ennum == -1 && trnum != -1) || (ennum != -1 && trnum == -1)) /* files do not match */
512 return false;
513 if (ennum == -1) {
514 break;
515 }
516 String[] enstrings = new String[ennum];
517 for (int i = 0; i < ennum; ++i) {
518 int val = ens.read(enlen);
519 if (val != 2) /* file corrupt */
520 return false;
521 val = (enlen[0] < 0 ? 256+enlen[0] : enlen[0])*256+(enlen[1] < 0 ? 256+enlen[1] : enlen[1]);
522 if (val > str.length) {
523 str = new byte[val];
524 }
525 int rval = ens.read(str, 0, val);
526 if (rval != val) /* file corrupt */
527 return false;
528 enstrings[i] = new String(str, 0, val, StandardCharsets.UTF_8);
529 }
530 String[] trstrings = new String[trnum];
531 for (int i = 0; i < trnum; ++i) {
532 int val = trs.read(trlen);
533 if (val != 2) /* file corrupt */
534 return false;
535 val = (trlen[0] < 0 ? 256+trlen[0] : trlen[0])*256+(trlen[1] < 0 ? 256+trlen[1] : trlen[1]);
536 if (val > str.length) {
537 str = new byte[val];
538 }
539 int rval = trs.read(str, 0, val);
540 if (rval != val) /* file corrupt */
541 return false;
542 trstrings[i] = new String(str, 0, val, StandardCharsets.UTF_8);
543 }
544 if (trnum > 0 && !p.containsKey(enstrings[0])) {
545 p.put(enstrings[0], trstrings);
546 }
547 } else {
548 int enval = ens.read(enlen);
549 int trval = trs.read(trlen);
550 if (enval != trval) /* files do not match */
551 return false;
552 if (enval == -1) {
553 break;
554 }
555 if (enval != 2) /* files corrupt */
556 return false;
557 enval = (enlen[0] < 0 ? 256+enlen[0] : enlen[0])*256+(enlen[1] < 0 ? 256+enlen[1] : enlen[1]);
558 trval = (trlen[0] < 0 ? 256+trlen[0] : trlen[0])*256+(trlen[1] < 0 ? 256+trlen[1] : trlen[1]);
559 if (trval == 0xFFFE) /* marks identical string, handle equally to non-translated */
560 trval = 0;
561 if (enval == 0xFFFF) {
562 multimode = true;
563 if (trval != 0xFFFF) /* files do not match */
564 return false;
565 } else {
566 if (enval > str.length) {
567 str = new byte[enval];
568 }
569 if (trval > str.length) {
570 str = new byte[trval];
571 }
572 int val = ens.read(str, 0, enval);
573 if (val != enval) /* file corrupt */
574 return false;
575 String enstr = new String(str, 0, enval, StandardCharsets.UTF_8);
576 if (trval != 0) {
577 val = trs.read(str, 0, trval);
578 if (val != trval) /* file corrupt */
579 return false;
580 String trstr = new String(str, 0, trval, StandardCharsets.UTF_8);
581 if (!s.containsKey(enstr))
582 s.put(enstr, trstr);
583 }
584 }
585 }
586 }
587 } catch (IOException e) {
588 Logging.trace(e);
589 return false;
590 }
591 if (!s.isEmpty()) {
592 strings = s;
593 pstrings = p;
594 return true;
595 }
596 return false;
597 }
598
599 /**
600 * Sets the default locale (see {@link Locale#setDefault(Locale)} to the local
601 * given by <code>localName</code>.
602 *
603 * Ignored if localeName is null. If the locale with name <code>localName</code>
604 * isn't found the default local is set to <code>en</code> (english).
605 *
606 * @param localeName the locale name. Ignored if null.
607 */
608 public static void set(String localeName) {
609 if (localeName != null) {
610 Locale l = LanguageInfo.getLocale(localeName, true);
611 if (load(LanguageInfo.getJOSMLocaleCode(l))) {
612 Locale.setDefault(l);
613 } else {
614 if (!"en".equals(l.getLanguage())) {
615 Logging.info(tr("Unable to find translation for the locale {0}. Reverting to {1}.",
616 LanguageInfo.getDisplayName(l), LanguageInfo.getDisplayName(Locale.getDefault())));
617 } else {
618 strings = null;
619 pstrings = null;
620 }
621 }
622 }
623 }
624
625 private static int pluralEval(long n) {
626 switch(pluralMode) {
627 case MODE_NOTONE: /* bg, da, de, el, en, en_AU, en_CA, en_GB, es, et, eu, fi, gl, is, it, iw_IL, mr, nb, nl, sv */
628 return (n != 1) ? 1 : 0;
629 case MODE_NONE: /* id, vi, ja, km, tr, zh_CN, zh_TW */
630 return 0;
631 case MODE_GREATERONE: /* fr, pt_BR */
632 return (n > 1) ? 1 : 0;
633 case MODE_CS:
634 return (n == 1) ? 0 : (((n >= 2) && (n <= 4)) ? 1 : 2);
635 case MODE_AR:
636 return ((n == 0) ? 0 : ((n == 1) ? 1 : ((n == 2) ? 2 : ((((n % 100) >= 3)
637 && ((n % 100) <= 10)) ? 3 : ((((n % 100) >= 11) && ((n % 100) <= 99)) ? 4 : 5)))));
638 case MODE_PL:
639 return (n == 1) ? 0 : (((((n % 10) >= 2) && ((n % 10) <= 4))
640 && (((n % 100) < 10) || ((n % 100) >= 20))) ? 1 : 2);
641 //case MODE_RO:
642 // return ((n == 1) ? 0 : ((((n % 100) > 19) || (((n % 100) == 0) && (n != 0))) ? 2 : 1));
643 case MODE_LT:
644 return ((n % 10) == 1) && ((n % 100) != 11) ? 0 : (((n % 10) >= 2)
645 && (((n % 100) < 10) || ((n % 100) >= 20)) ? 1 : 2);
646 case MODE_RU:
647 return (((n % 10) == 1) && ((n % 100) != 11)) ? 0 : (((((n % 10) >= 2)
648 && ((n % 10) <= 4)) && (((n % 100) < 10) || ((n % 100) >= 20))) ? 1 : 2);
649 case MODE_SK:
650 return (n == 1) ? 1 : (((n >= 2) && (n <= 4)) ? 2 : 0);
651 //case MODE_SL:
652 // return (((n % 100) == 1) ? 1 : (((n % 100) == 2) ? 2 : ((((n % 100) == 3)
653 // || ((n % 100) == 4)) ? 3 : 0)));
654 }
655 return 0;
656 }
657
658 /**
659 * Returns the map of singular translations.
660 * @return the map of singular translations.
661 * @since 13761
662 */
663 public static Map<String, String> getSingularTranslations() {
664 return new HashMap<>(strings);
665 }
666
667 /**
668 * Returns the map of plural translations.
669 * @return the map of plural translations.
670 * @since 13761
671 */
672 public static Map<String, String[]> getPluralTranslations() {
673 return new HashMap<>(pstrings);
674 }
675
676 /**
677 * Returns the original default locale found when the JVM started.
678 * Used to guess real language/country of current user disregarding language chosen in JOSM preferences.
679 * @return the original default locale found when the JVM started
680 * @since 14013
681 */
682 public static Locale getOriginalLocale() {
683 return originalLocale;
684 }
685
686 /**
687 * Returns the localized name of the given script. Only scripts used in the OSM database are known.
688 * @param script Writing system
689 * @return the localized name of the given script, or null
690 * @since 15501
691 */
692 public static String getLocalizedScript(String script) {
693 if (script != null) {
694 switch (script.toLowerCase(Locale.ENGLISH)) {
695 case HIRAGANA:
696 return /* I18n: a Japanese syllabary */ tr("Hiragana");
697 case KATAKANA:
698 return /* I18n: a Japanese syllabary */ tr("Katakana");
699 case LATIN:
700 return /* I18n: usage of latin letters/script for usually non-latin languages */ tr("Latin");
701 case PINYIN:
702 return /* I18n: official romanization system for Standard Chinese */ tr("Pinyin");
703 case ROMAJI:
704 return /* I18n: a Japanese syllabary (latin script) */ tr("Rōmaji");
705 default:
706 Logging.warn("Unsupported script: {0}", script);
707 }
708 }
709 return null;
710 }
711
712 /**
713 * Returns the localized name of the given language and optional script.
714 * @param language Language
715 * @return the pair of localized name + known state of the given language, or null
716 * @since 15501
717 */
718 public static Pair<String, Boolean> getLocalizedLanguageName(String language) {
719 Matcher m = LANGUAGE_NAMES.matcher(language);
720 if (m.matches()) {
721 String code = m.group(1);
722 String label = new Locale(code).getDisplayLanguage();
723 boolean knownNameKey = !code.equals(label);
724 String script = getLocalizedScript(m.group(2));
725 if (script != null) {
726 label += " (" + script + ")";
727 }
728 return new Pair<>(label, knownNameKey);
729 }
730 return null;
731 }
732}
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